a scientist publishes a paper that states that changes in the levels of gases in the atmosphere of a moon of…

a scientist publishes a paper that states that changes in the levels of gases in the atmosphere of a moon of saturn indicate that there may be extraterrestrial life on that moon. which statement correctly answers whether the question of alien life on this moon is scientific?\nthe question is not scientific because it cannot be tested.\nthe question is scientific because it deals with astronomy.\nthe question is not scientific because it involves alien, extraterrestrial life.\nthe question is scientific because it is testable and verifiable.
Answer
Brief Explanations:
Scientific questions must be testable and verifiable. While the idea of extraterrestrial life is involved, the changes in gas - levels can potentially be measured and tested to support or refute the claim.
Answer:
The question is scientific because it is testable and verifiable.